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Rare Earth Element Concentrations in the Natural Water Reference Materials (NRCC) NASS‐5, CASS‐4 and SLEW‐3
Author(s) -
Lawrence Michael G.,
Kamber Balz S.
Publication year - 2007
Publication title -
geostandards and geoanalytical research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.037
H-Index - 73
eISSN - 1751-908X
pISSN - 1639-4488
DOI - 10.1111/j.1751-908x.2007.00850.x
Subject(s) - seawater , rare earth element , yttrium , trace element , extraction (chemistry) , phosphoric acid , lanthanide , chemistry , geology , environmental chemistry , nitric acid , mineralogy , rare earth , geochemistry , inorganic chemistry , chromatography , oceanography , ion , organic chemistry , oxide
The rare earth element and yttrium concentrations of the NRCC reference materials North Atlantic Surface seawater, NASS‐5; Coastal Atlantic Surface Seawater, CASS‐4; and the estuarine water, SLEW‐3 have been precisely determined by ICP‐MS after ca. 1:8 preconcentration following a triple chelation using HDEHP (phosphoric acid 2‐ethylhexyl ester ‐mono and di ester mixture) in heptane, and back extraction in nitric acid. We propose reference values with uncertainties for all naturally occurring lanthanides and yttrium.